Naresh Krish
/
itracker-mbed-os-example-opt3001
Sample program on how to use the OPT3001 sensor on the RAKWirelss iTracker module
segger-rtt/SEGGER_RTT_printf.c@0:33cb2fa095df, 2018-02-12 (annotated)
- Committer:
- knaresh89
- Date:
- Mon Feb 12 05:06:24 2018 +0000
- Revision:
- 0:33cb2fa095df
Sample program on how to use the OPT3001 sensor on the RAKWireless iTracker module
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
knaresh89 | 0:33cb2fa095df | 1 | /********************************************************************* |
knaresh89 | 0:33cb2fa095df | 2 | * SEGGER MICROCONTROLLER GmbH & Co. KG * |
knaresh89 | 0:33cb2fa095df | 3 | * Solutions for real time microcontroller applications * |
knaresh89 | 0:33cb2fa095df | 4 | ********************************************************************** |
knaresh89 | 0:33cb2fa095df | 5 | * * |
knaresh89 | 0:33cb2fa095df | 6 | * (c) 2014 - 2016 SEGGER Microcontroller GmbH & Co. KG * |
knaresh89 | 0:33cb2fa095df | 7 | * * |
knaresh89 | 0:33cb2fa095df | 8 | * www.segger.com Support: support@segger.com * |
knaresh89 | 0:33cb2fa095df | 9 | * * |
knaresh89 | 0:33cb2fa095df | 10 | ********************************************************************** |
knaresh89 | 0:33cb2fa095df | 11 | * * |
knaresh89 | 0:33cb2fa095df | 12 | * SEGGER RTT * Real Time Transfer for embedded targets * |
knaresh89 | 0:33cb2fa095df | 13 | * * |
knaresh89 | 0:33cb2fa095df | 14 | ********************************************************************** |
knaresh89 | 0:33cb2fa095df | 15 | * * |
knaresh89 | 0:33cb2fa095df | 16 | * All rights reserved. * |
knaresh89 | 0:33cb2fa095df | 17 | * * |
knaresh89 | 0:33cb2fa095df | 18 | * SEGGER strongly recommends to not make any changes * |
knaresh89 | 0:33cb2fa095df | 19 | * to or modify the source code of this software in order to stay * |
knaresh89 | 0:33cb2fa095df | 20 | * compatible with the RTT protocol and J-Link. * |
knaresh89 | 0:33cb2fa095df | 21 | * * |
knaresh89 | 0:33cb2fa095df | 22 | * Redistribution and use in source and binary forms, with or * |
knaresh89 | 0:33cb2fa095df | 23 | * without modification, are permitted provided that the following * |
knaresh89 | 0:33cb2fa095df | 24 | * conditions are met: * |
knaresh89 | 0:33cb2fa095df | 25 | * * |
knaresh89 | 0:33cb2fa095df | 26 | * o Redistributions of source code must retain the above copyright * |
knaresh89 | 0:33cb2fa095df | 27 | * notice, this list of conditions and the following disclaimer. * |
knaresh89 | 0:33cb2fa095df | 28 | * * |
knaresh89 | 0:33cb2fa095df | 29 | * o Redistributions in binary form must reproduce the above * |
knaresh89 | 0:33cb2fa095df | 30 | * copyright notice, this list of conditions and the following * |
knaresh89 | 0:33cb2fa095df | 31 | * disclaimer in the documentation and/or other materials provided * |
knaresh89 | 0:33cb2fa095df | 32 | * with the distribution. * |
knaresh89 | 0:33cb2fa095df | 33 | * * |
knaresh89 | 0:33cb2fa095df | 34 | * o Neither the name of SEGGER Microcontroller GmbH & Co. KG * |
knaresh89 | 0:33cb2fa095df | 35 | * nor the names of its contributors may be used to endorse or * |
knaresh89 | 0:33cb2fa095df | 36 | * promote products derived from this software without specific * |
knaresh89 | 0:33cb2fa095df | 37 | * prior written permission. * |
knaresh89 | 0:33cb2fa095df | 38 | * * |
knaresh89 | 0:33cb2fa095df | 39 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND * |
knaresh89 | 0:33cb2fa095df | 40 | * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, * |
knaresh89 | 0:33cb2fa095df | 41 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * |
knaresh89 | 0:33cb2fa095df | 42 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * |
knaresh89 | 0:33cb2fa095df | 43 | * DISCLAIMED. IN NO EVENT SHALL SEGGER Microcontroller BE LIABLE FOR * |
knaresh89 | 0:33cb2fa095df | 44 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * |
knaresh89 | 0:33cb2fa095df | 45 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT * |
knaresh89 | 0:33cb2fa095df | 46 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * |
knaresh89 | 0:33cb2fa095df | 47 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * |
knaresh89 | 0:33cb2fa095df | 48 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * |
knaresh89 | 0:33cb2fa095df | 49 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE * |
knaresh89 | 0:33cb2fa095df | 50 | * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * |
knaresh89 | 0:33cb2fa095df | 51 | * DAMAGE. * |
knaresh89 | 0:33cb2fa095df | 52 | * * |
knaresh89 | 0:33cb2fa095df | 53 | ********************************************************************** |
knaresh89 | 0:33cb2fa095df | 54 | ---------------------------END-OF-HEADER------------------------------ |
knaresh89 | 0:33cb2fa095df | 55 | File : SEGGER_RTT_printf.c |
knaresh89 | 0:33cb2fa095df | 56 | Purpose : Replacement for printf to write formatted data via RTT |
knaresh89 | 0:33cb2fa095df | 57 | Revision: $Rev: 4351 $ |
knaresh89 | 0:33cb2fa095df | 58 | ---------------------------------------------------------------------- |
knaresh89 | 0:33cb2fa095df | 59 | */ |
knaresh89 | 0:33cb2fa095df | 60 | #include "SEGGER_RTT.h" |
knaresh89 | 0:33cb2fa095df | 61 | #include "SEGGER_RTT_Conf.h" |
knaresh89 | 0:33cb2fa095df | 62 | |
knaresh89 | 0:33cb2fa095df | 63 | /********************************************************************* |
knaresh89 | 0:33cb2fa095df | 64 | * |
knaresh89 | 0:33cb2fa095df | 65 | * Defines, configurable |
knaresh89 | 0:33cb2fa095df | 66 | * |
knaresh89 | 0:33cb2fa095df | 67 | ********************************************************************** |
knaresh89 | 0:33cb2fa095df | 68 | */ |
knaresh89 | 0:33cb2fa095df | 69 | |
knaresh89 | 0:33cb2fa095df | 70 | #ifndef SEGGER_RTT_PRINTF_BUFFER_SIZE |
knaresh89 | 0:33cb2fa095df | 71 | #define SEGGER_RTT_PRINTF_BUFFER_SIZE (64) |
knaresh89 | 0:33cb2fa095df | 72 | #endif |
knaresh89 | 0:33cb2fa095df | 73 | |
knaresh89 | 0:33cb2fa095df | 74 | #include <stdlib.h> |
knaresh89 | 0:33cb2fa095df | 75 | #include <stdarg.h> |
knaresh89 | 0:33cb2fa095df | 76 | |
knaresh89 | 0:33cb2fa095df | 77 | |
knaresh89 | 0:33cb2fa095df | 78 | #define FORMAT_FLAG_LEFT_JUSTIFY (1u << 0) |
knaresh89 | 0:33cb2fa095df | 79 | #define FORMAT_FLAG_PAD_ZERO (1u << 1) |
knaresh89 | 0:33cb2fa095df | 80 | #define FORMAT_FLAG_PRINT_SIGN (1u << 2) |
knaresh89 | 0:33cb2fa095df | 81 | #define FORMAT_FLAG_ALTERNATE (1u << 3) |
knaresh89 | 0:33cb2fa095df | 82 | |
knaresh89 | 0:33cb2fa095df | 83 | /********************************************************************* |
knaresh89 | 0:33cb2fa095df | 84 | * |
knaresh89 | 0:33cb2fa095df | 85 | * Types |
knaresh89 | 0:33cb2fa095df | 86 | * |
knaresh89 | 0:33cb2fa095df | 87 | ********************************************************************** |
knaresh89 | 0:33cb2fa095df | 88 | */ |
knaresh89 | 0:33cb2fa095df | 89 | |
knaresh89 | 0:33cb2fa095df | 90 | typedef struct { |
knaresh89 | 0:33cb2fa095df | 91 | char* pBuffer; |
knaresh89 | 0:33cb2fa095df | 92 | unsigned BufferSize; |
knaresh89 | 0:33cb2fa095df | 93 | unsigned Cnt; |
knaresh89 | 0:33cb2fa095df | 94 | |
knaresh89 | 0:33cb2fa095df | 95 | int ReturnValue; |
knaresh89 | 0:33cb2fa095df | 96 | |
knaresh89 | 0:33cb2fa095df | 97 | unsigned RTTBufferIndex; |
knaresh89 | 0:33cb2fa095df | 98 | } SEGGER_RTT_PRINTF_DESC; |
knaresh89 | 0:33cb2fa095df | 99 | |
knaresh89 | 0:33cb2fa095df | 100 | /********************************************************************* |
knaresh89 | 0:33cb2fa095df | 101 | * |
knaresh89 | 0:33cb2fa095df | 102 | * Function prototypes |
knaresh89 | 0:33cb2fa095df | 103 | * |
knaresh89 | 0:33cb2fa095df | 104 | ********************************************************************** |
knaresh89 | 0:33cb2fa095df | 105 | */ |
knaresh89 | 0:33cb2fa095df | 106 | int SEGGER_RTT_vprintf(unsigned BufferIndex, const char * sFormat, va_list * pParamList); |
knaresh89 | 0:33cb2fa095df | 107 | |
knaresh89 | 0:33cb2fa095df | 108 | /********************************************************************* |
knaresh89 | 0:33cb2fa095df | 109 | * |
knaresh89 | 0:33cb2fa095df | 110 | * Static code |
knaresh89 | 0:33cb2fa095df | 111 | * |
knaresh89 | 0:33cb2fa095df | 112 | ********************************************************************** |
knaresh89 | 0:33cb2fa095df | 113 | */ |
knaresh89 | 0:33cb2fa095df | 114 | /********************************************************************* |
knaresh89 | 0:33cb2fa095df | 115 | * |
knaresh89 | 0:33cb2fa095df | 116 | * _StoreChar |
knaresh89 | 0:33cb2fa095df | 117 | */ |
knaresh89 | 0:33cb2fa095df | 118 | static void _StoreChar(SEGGER_RTT_PRINTF_DESC * p, char c) { |
knaresh89 | 0:33cb2fa095df | 119 | unsigned Cnt; |
knaresh89 | 0:33cb2fa095df | 120 | |
knaresh89 | 0:33cb2fa095df | 121 | Cnt = p->Cnt; |
knaresh89 | 0:33cb2fa095df | 122 | if ((Cnt + 1u) <= p->BufferSize) { |
knaresh89 | 0:33cb2fa095df | 123 | *(p->pBuffer + Cnt) = c; |
knaresh89 | 0:33cb2fa095df | 124 | p->Cnt = Cnt + 1u; |
knaresh89 | 0:33cb2fa095df | 125 | p->ReturnValue++; |
knaresh89 | 0:33cb2fa095df | 126 | } |
knaresh89 | 0:33cb2fa095df | 127 | // |
knaresh89 | 0:33cb2fa095df | 128 | // Write part of string, when the buffer is full |
knaresh89 | 0:33cb2fa095df | 129 | // |
knaresh89 | 0:33cb2fa095df | 130 | if (p->Cnt == p->BufferSize) { |
knaresh89 | 0:33cb2fa095df | 131 | if (SEGGER_RTT_Write(p->RTTBufferIndex, p->pBuffer, p->Cnt) != p->Cnt) { |
knaresh89 | 0:33cb2fa095df | 132 | p->ReturnValue = -1; |
knaresh89 | 0:33cb2fa095df | 133 | } else { |
knaresh89 | 0:33cb2fa095df | 134 | p->Cnt = 0u; |
knaresh89 | 0:33cb2fa095df | 135 | } |
knaresh89 | 0:33cb2fa095df | 136 | } |
knaresh89 | 0:33cb2fa095df | 137 | } |
knaresh89 | 0:33cb2fa095df | 138 | |
knaresh89 | 0:33cb2fa095df | 139 | /********************************************************************* |
knaresh89 | 0:33cb2fa095df | 140 | * |
knaresh89 | 0:33cb2fa095df | 141 | * _PrintUnsigned |
knaresh89 | 0:33cb2fa095df | 142 | */ |
knaresh89 | 0:33cb2fa095df | 143 | static void _PrintUnsigned(SEGGER_RTT_PRINTF_DESC * pBufferDesc, unsigned v, unsigned Base, unsigned NumDigits, unsigned FieldWidth, unsigned FormatFlags) { |
knaresh89 | 0:33cb2fa095df | 144 | static const char _aV2C[16] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; |
knaresh89 | 0:33cb2fa095df | 145 | unsigned Div; |
knaresh89 | 0:33cb2fa095df | 146 | unsigned Digit; |
knaresh89 | 0:33cb2fa095df | 147 | unsigned Number; |
knaresh89 | 0:33cb2fa095df | 148 | unsigned Width; |
knaresh89 | 0:33cb2fa095df | 149 | char c; |
knaresh89 | 0:33cb2fa095df | 150 | |
knaresh89 | 0:33cb2fa095df | 151 | Number = v; |
knaresh89 | 0:33cb2fa095df | 152 | Digit = 1u; |
knaresh89 | 0:33cb2fa095df | 153 | // |
knaresh89 | 0:33cb2fa095df | 154 | // Get actual field width |
knaresh89 | 0:33cb2fa095df | 155 | // |
knaresh89 | 0:33cb2fa095df | 156 | Width = 1u; |
knaresh89 | 0:33cb2fa095df | 157 | while (Number >= Base) { |
knaresh89 | 0:33cb2fa095df | 158 | Number = (Number / Base); |
knaresh89 | 0:33cb2fa095df | 159 | Width++; |
knaresh89 | 0:33cb2fa095df | 160 | } |
knaresh89 | 0:33cb2fa095df | 161 | if (NumDigits > Width) { |
knaresh89 | 0:33cb2fa095df | 162 | Width = NumDigits; |
knaresh89 | 0:33cb2fa095df | 163 | } |
knaresh89 | 0:33cb2fa095df | 164 | // |
knaresh89 | 0:33cb2fa095df | 165 | // Print leading chars if necessary |
knaresh89 | 0:33cb2fa095df | 166 | // |
knaresh89 | 0:33cb2fa095df | 167 | if ((FormatFlags & FORMAT_FLAG_LEFT_JUSTIFY) == 0u) { |
knaresh89 | 0:33cb2fa095df | 168 | if (FieldWidth != 0u) { |
knaresh89 | 0:33cb2fa095df | 169 | if (((FormatFlags & FORMAT_FLAG_PAD_ZERO) == FORMAT_FLAG_PAD_ZERO) && (NumDigits == 0u)) { |
knaresh89 | 0:33cb2fa095df | 170 | c = '0'; |
knaresh89 | 0:33cb2fa095df | 171 | } else { |
knaresh89 | 0:33cb2fa095df | 172 | c = ' '; |
knaresh89 | 0:33cb2fa095df | 173 | } |
knaresh89 | 0:33cb2fa095df | 174 | while ((FieldWidth != 0u) && (Width < FieldWidth)) { |
knaresh89 | 0:33cb2fa095df | 175 | FieldWidth--; |
knaresh89 | 0:33cb2fa095df | 176 | _StoreChar(pBufferDesc, c); |
knaresh89 | 0:33cb2fa095df | 177 | if (pBufferDesc->ReturnValue < 0) { |
knaresh89 | 0:33cb2fa095df | 178 | break; |
knaresh89 | 0:33cb2fa095df | 179 | } |
knaresh89 | 0:33cb2fa095df | 180 | } |
knaresh89 | 0:33cb2fa095df | 181 | } |
knaresh89 | 0:33cb2fa095df | 182 | } |
knaresh89 | 0:33cb2fa095df | 183 | if (pBufferDesc->ReturnValue >= 0) { |
knaresh89 | 0:33cb2fa095df | 184 | // |
knaresh89 | 0:33cb2fa095df | 185 | // Compute Digit. |
knaresh89 | 0:33cb2fa095df | 186 | // Loop until Digit has the value of the highest digit required. |
knaresh89 | 0:33cb2fa095df | 187 | // Example: If the output is 345 (Base 10), loop 2 times until Digit is 100. |
knaresh89 | 0:33cb2fa095df | 188 | // |
knaresh89 | 0:33cb2fa095df | 189 | while (1) { |
knaresh89 | 0:33cb2fa095df | 190 | if (NumDigits > 1u) { // User specified a min number of digits to print? => Make sure we loop at least that often, before checking anything else (> 1 check avoids problems with NumDigits being signed / unsigned) |
knaresh89 | 0:33cb2fa095df | 191 | NumDigits--; |
knaresh89 | 0:33cb2fa095df | 192 | } else { |
knaresh89 | 0:33cb2fa095df | 193 | Div = v / Digit; |
knaresh89 | 0:33cb2fa095df | 194 | if (Div < Base) { // Is our divider big enough to extract the highest digit from value? => Done |
knaresh89 | 0:33cb2fa095df | 195 | break; |
knaresh89 | 0:33cb2fa095df | 196 | } |
knaresh89 | 0:33cb2fa095df | 197 | } |
knaresh89 | 0:33cb2fa095df | 198 | Digit *= Base; |
knaresh89 | 0:33cb2fa095df | 199 | } |
knaresh89 | 0:33cb2fa095df | 200 | // |
knaresh89 | 0:33cb2fa095df | 201 | // Output digits |
knaresh89 | 0:33cb2fa095df | 202 | // |
knaresh89 | 0:33cb2fa095df | 203 | do { |
knaresh89 | 0:33cb2fa095df | 204 | Div = v / Digit; |
knaresh89 | 0:33cb2fa095df | 205 | v -= Div * Digit; |
knaresh89 | 0:33cb2fa095df | 206 | _StoreChar(pBufferDesc, _aV2C[Div]); |
knaresh89 | 0:33cb2fa095df | 207 | if (pBufferDesc->ReturnValue < 0) { |
knaresh89 | 0:33cb2fa095df | 208 | break; |
knaresh89 | 0:33cb2fa095df | 209 | } |
knaresh89 | 0:33cb2fa095df | 210 | Digit /= Base; |
knaresh89 | 0:33cb2fa095df | 211 | } while (Digit); |
knaresh89 | 0:33cb2fa095df | 212 | // |
knaresh89 | 0:33cb2fa095df | 213 | // Print trailing spaces if necessary |
knaresh89 | 0:33cb2fa095df | 214 | // |
knaresh89 | 0:33cb2fa095df | 215 | if ((FormatFlags & FORMAT_FLAG_LEFT_JUSTIFY) == FORMAT_FLAG_LEFT_JUSTIFY) { |
knaresh89 | 0:33cb2fa095df | 216 | if (FieldWidth != 0u) { |
knaresh89 | 0:33cb2fa095df | 217 | while ((FieldWidth != 0u) && (Width < FieldWidth)) { |
knaresh89 | 0:33cb2fa095df | 218 | FieldWidth--; |
knaresh89 | 0:33cb2fa095df | 219 | _StoreChar(pBufferDesc, ' '); |
knaresh89 | 0:33cb2fa095df | 220 | if (pBufferDesc->ReturnValue < 0) { |
knaresh89 | 0:33cb2fa095df | 221 | break; |
knaresh89 | 0:33cb2fa095df | 222 | } |
knaresh89 | 0:33cb2fa095df | 223 | } |
knaresh89 | 0:33cb2fa095df | 224 | } |
knaresh89 | 0:33cb2fa095df | 225 | } |
knaresh89 | 0:33cb2fa095df | 226 | } |
knaresh89 | 0:33cb2fa095df | 227 | } |
knaresh89 | 0:33cb2fa095df | 228 | |
knaresh89 | 0:33cb2fa095df | 229 | /********************************************************************* |
knaresh89 | 0:33cb2fa095df | 230 | * |
knaresh89 | 0:33cb2fa095df | 231 | * _PrintInt |
knaresh89 | 0:33cb2fa095df | 232 | */ |
knaresh89 | 0:33cb2fa095df | 233 | static void _PrintInt(SEGGER_RTT_PRINTF_DESC * pBufferDesc, int v, unsigned Base, unsigned NumDigits, unsigned FieldWidth, unsigned FormatFlags) { |
knaresh89 | 0:33cb2fa095df | 234 | unsigned Width; |
knaresh89 | 0:33cb2fa095df | 235 | int Number; |
knaresh89 | 0:33cb2fa095df | 236 | |
knaresh89 | 0:33cb2fa095df | 237 | Number = (v < 0) ? -v : v; |
knaresh89 | 0:33cb2fa095df | 238 | |
knaresh89 | 0:33cb2fa095df | 239 | // |
knaresh89 | 0:33cb2fa095df | 240 | // Get actual field width |
knaresh89 | 0:33cb2fa095df | 241 | // |
knaresh89 | 0:33cb2fa095df | 242 | Width = 1u; |
knaresh89 | 0:33cb2fa095df | 243 | while (Number >= (int)Base) { |
knaresh89 | 0:33cb2fa095df | 244 | Number = (Number / (int)Base); |
knaresh89 | 0:33cb2fa095df | 245 | Width++; |
knaresh89 | 0:33cb2fa095df | 246 | } |
knaresh89 | 0:33cb2fa095df | 247 | if (NumDigits > Width) { |
knaresh89 | 0:33cb2fa095df | 248 | Width = NumDigits; |
knaresh89 | 0:33cb2fa095df | 249 | } |
knaresh89 | 0:33cb2fa095df | 250 | if ((FieldWidth > 0u) && ((v < 0) || ((FormatFlags & FORMAT_FLAG_PRINT_SIGN) == FORMAT_FLAG_PRINT_SIGN))) { |
knaresh89 | 0:33cb2fa095df | 251 | FieldWidth--; |
knaresh89 | 0:33cb2fa095df | 252 | } |
knaresh89 | 0:33cb2fa095df | 253 | |
knaresh89 | 0:33cb2fa095df | 254 | // |
knaresh89 | 0:33cb2fa095df | 255 | // Print leading spaces if necessary |
knaresh89 | 0:33cb2fa095df | 256 | // |
knaresh89 | 0:33cb2fa095df | 257 | if ((((FormatFlags & FORMAT_FLAG_PAD_ZERO) == 0u) || (NumDigits != 0u)) && ((FormatFlags & FORMAT_FLAG_LEFT_JUSTIFY) == 0u)) { |
knaresh89 | 0:33cb2fa095df | 258 | if (FieldWidth != 0u) { |
knaresh89 | 0:33cb2fa095df | 259 | while ((FieldWidth != 0u) && (Width < FieldWidth)) { |
knaresh89 | 0:33cb2fa095df | 260 | FieldWidth--; |
knaresh89 | 0:33cb2fa095df | 261 | _StoreChar(pBufferDesc, ' '); |
knaresh89 | 0:33cb2fa095df | 262 | if (pBufferDesc->ReturnValue < 0) { |
knaresh89 | 0:33cb2fa095df | 263 | break; |
knaresh89 | 0:33cb2fa095df | 264 | } |
knaresh89 | 0:33cb2fa095df | 265 | } |
knaresh89 | 0:33cb2fa095df | 266 | } |
knaresh89 | 0:33cb2fa095df | 267 | } |
knaresh89 | 0:33cb2fa095df | 268 | // |
knaresh89 | 0:33cb2fa095df | 269 | // Print sign if necessary |
knaresh89 | 0:33cb2fa095df | 270 | // |
knaresh89 | 0:33cb2fa095df | 271 | if (pBufferDesc->ReturnValue >= 0) { |
knaresh89 | 0:33cb2fa095df | 272 | if (v < 0) { |
knaresh89 | 0:33cb2fa095df | 273 | v = -v; |
knaresh89 | 0:33cb2fa095df | 274 | _StoreChar(pBufferDesc, '-'); |
knaresh89 | 0:33cb2fa095df | 275 | } else if ((FormatFlags & FORMAT_FLAG_PRINT_SIGN) == FORMAT_FLAG_PRINT_SIGN) { |
knaresh89 | 0:33cb2fa095df | 276 | _StoreChar(pBufferDesc, '+'); |
knaresh89 | 0:33cb2fa095df | 277 | } else { |
knaresh89 | 0:33cb2fa095df | 278 | |
knaresh89 | 0:33cb2fa095df | 279 | } |
knaresh89 | 0:33cb2fa095df | 280 | if (pBufferDesc->ReturnValue >= 0) { |
knaresh89 | 0:33cb2fa095df | 281 | // |
knaresh89 | 0:33cb2fa095df | 282 | // Print leading zeros if necessary |
knaresh89 | 0:33cb2fa095df | 283 | // |
knaresh89 | 0:33cb2fa095df | 284 | if (((FormatFlags & FORMAT_FLAG_PAD_ZERO) == FORMAT_FLAG_PAD_ZERO) && ((FormatFlags & FORMAT_FLAG_LEFT_JUSTIFY) == 0u) && (NumDigits == 0u)) { |
knaresh89 | 0:33cb2fa095df | 285 | if (FieldWidth != 0u) { |
knaresh89 | 0:33cb2fa095df | 286 | while ((FieldWidth != 0u) && (Width < FieldWidth)) { |
knaresh89 | 0:33cb2fa095df | 287 | FieldWidth--; |
knaresh89 | 0:33cb2fa095df | 288 | _StoreChar(pBufferDesc, '0'); |
knaresh89 | 0:33cb2fa095df | 289 | if (pBufferDesc->ReturnValue < 0) { |
knaresh89 | 0:33cb2fa095df | 290 | break; |
knaresh89 | 0:33cb2fa095df | 291 | } |
knaresh89 | 0:33cb2fa095df | 292 | } |
knaresh89 | 0:33cb2fa095df | 293 | } |
knaresh89 | 0:33cb2fa095df | 294 | } |
knaresh89 | 0:33cb2fa095df | 295 | if (pBufferDesc->ReturnValue >= 0) { |
knaresh89 | 0:33cb2fa095df | 296 | // |
knaresh89 | 0:33cb2fa095df | 297 | // Print number without sign |
knaresh89 | 0:33cb2fa095df | 298 | // |
knaresh89 | 0:33cb2fa095df | 299 | _PrintUnsigned(pBufferDesc, (unsigned)v, Base, NumDigits, FieldWidth, FormatFlags); |
knaresh89 | 0:33cb2fa095df | 300 | } |
knaresh89 | 0:33cb2fa095df | 301 | } |
knaresh89 | 0:33cb2fa095df | 302 | } |
knaresh89 | 0:33cb2fa095df | 303 | } |
knaresh89 | 0:33cb2fa095df | 304 | |
knaresh89 | 0:33cb2fa095df | 305 | /********************************************************************* |
knaresh89 | 0:33cb2fa095df | 306 | * |
knaresh89 | 0:33cb2fa095df | 307 | * Public code |
knaresh89 | 0:33cb2fa095df | 308 | * |
knaresh89 | 0:33cb2fa095df | 309 | ********************************************************************** |
knaresh89 | 0:33cb2fa095df | 310 | */ |
knaresh89 | 0:33cb2fa095df | 311 | /********************************************************************* |
knaresh89 | 0:33cb2fa095df | 312 | * |
knaresh89 | 0:33cb2fa095df | 313 | * SEGGER_RTT_vprintf |
knaresh89 | 0:33cb2fa095df | 314 | * |
knaresh89 | 0:33cb2fa095df | 315 | * Function description |
knaresh89 | 0:33cb2fa095df | 316 | * Stores a formatted string in SEGGER RTT control block. |
knaresh89 | 0:33cb2fa095df | 317 | * This data is read by the host. |
knaresh89 | 0:33cb2fa095df | 318 | * |
knaresh89 | 0:33cb2fa095df | 319 | * Parameters |
knaresh89 | 0:33cb2fa095df | 320 | * BufferIndex Index of "Up"-buffer to be used. (e.g. 0 for "Terminal") |
knaresh89 | 0:33cb2fa095df | 321 | * sFormat Pointer to format string |
knaresh89 | 0:33cb2fa095df | 322 | * pParamList Pointer to the list of arguments for the format string |
knaresh89 | 0:33cb2fa095df | 323 | * |
knaresh89 | 0:33cb2fa095df | 324 | * Return values |
knaresh89 | 0:33cb2fa095df | 325 | * >= 0: Number of bytes which have been stored in the "Up"-buffer. |
knaresh89 | 0:33cb2fa095df | 326 | * < 0: Error |
knaresh89 | 0:33cb2fa095df | 327 | */ |
knaresh89 | 0:33cb2fa095df | 328 | int SEGGER_RTT_vprintf(unsigned BufferIndex, const char * sFormat, va_list * pParamList) { |
knaresh89 | 0:33cb2fa095df | 329 | char c; |
knaresh89 | 0:33cb2fa095df | 330 | SEGGER_RTT_PRINTF_DESC BufferDesc; |
knaresh89 | 0:33cb2fa095df | 331 | int v; |
knaresh89 | 0:33cb2fa095df | 332 | unsigned NumDigits; |
knaresh89 | 0:33cb2fa095df | 333 | unsigned FormatFlags; |
knaresh89 | 0:33cb2fa095df | 334 | unsigned FieldWidth; |
knaresh89 | 0:33cb2fa095df | 335 | char acBuffer[SEGGER_RTT_PRINTF_BUFFER_SIZE]; |
knaresh89 | 0:33cb2fa095df | 336 | |
knaresh89 | 0:33cb2fa095df | 337 | BufferDesc.pBuffer = acBuffer; |
knaresh89 | 0:33cb2fa095df | 338 | BufferDesc.BufferSize = SEGGER_RTT_PRINTF_BUFFER_SIZE; |
knaresh89 | 0:33cb2fa095df | 339 | BufferDesc.Cnt = 0u; |
knaresh89 | 0:33cb2fa095df | 340 | BufferDesc.RTTBufferIndex = BufferIndex; |
knaresh89 | 0:33cb2fa095df | 341 | BufferDesc.ReturnValue = 0; |
knaresh89 | 0:33cb2fa095df | 342 | |
knaresh89 | 0:33cb2fa095df | 343 | do { |
knaresh89 | 0:33cb2fa095df | 344 | c = *sFormat; |
knaresh89 | 0:33cb2fa095df | 345 | sFormat++; |
knaresh89 | 0:33cb2fa095df | 346 | if (c == 0u) { |
knaresh89 | 0:33cb2fa095df | 347 | break; |
knaresh89 | 0:33cb2fa095df | 348 | } |
knaresh89 | 0:33cb2fa095df | 349 | if (c == '%') { |
knaresh89 | 0:33cb2fa095df | 350 | // |
knaresh89 | 0:33cb2fa095df | 351 | // Filter out flags |
knaresh89 | 0:33cb2fa095df | 352 | // |
knaresh89 | 0:33cb2fa095df | 353 | FormatFlags = 0u; |
knaresh89 | 0:33cb2fa095df | 354 | v = 1; |
knaresh89 | 0:33cb2fa095df | 355 | do { |
knaresh89 | 0:33cb2fa095df | 356 | c = *sFormat; |
knaresh89 | 0:33cb2fa095df | 357 | switch (c) { |
knaresh89 | 0:33cb2fa095df | 358 | case '-': FormatFlags |= FORMAT_FLAG_LEFT_JUSTIFY; sFormat++; break; |
knaresh89 | 0:33cb2fa095df | 359 | case '0': FormatFlags |= FORMAT_FLAG_PAD_ZERO; sFormat++; break; |
knaresh89 | 0:33cb2fa095df | 360 | case '+': FormatFlags |= FORMAT_FLAG_PRINT_SIGN; sFormat++; break; |
knaresh89 | 0:33cb2fa095df | 361 | case '#': FormatFlags |= FORMAT_FLAG_ALTERNATE; sFormat++; break; |
knaresh89 | 0:33cb2fa095df | 362 | default: v = 0; break; |
knaresh89 | 0:33cb2fa095df | 363 | } |
knaresh89 | 0:33cb2fa095df | 364 | } while (v); |
knaresh89 | 0:33cb2fa095df | 365 | // |
knaresh89 | 0:33cb2fa095df | 366 | // filter out field with |
knaresh89 | 0:33cb2fa095df | 367 | // |
knaresh89 | 0:33cb2fa095df | 368 | FieldWidth = 0u; |
knaresh89 | 0:33cb2fa095df | 369 | do { |
knaresh89 | 0:33cb2fa095df | 370 | c = *sFormat; |
knaresh89 | 0:33cb2fa095df | 371 | if ((c < '0') || (c > '9')) { |
knaresh89 | 0:33cb2fa095df | 372 | break; |
knaresh89 | 0:33cb2fa095df | 373 | } |
knaresh89 | 0:33cb2fa095df | 374 | sFormat++; |
knaresh89 | 0:33cb2fa095df | 375 | FieldWidth = (FieldWidth * 10u) + ((unsigned)c - '0'); |
knaresh89 | 0:33cb2fa095df | 376 | } while (1); |
knaresh89 | 0:33cb2fa095df | 377 | |
knaresh89 | 0:33cb2fa095df | 378 | // |
knaresh89 | 0:33cb2fa095df | 379 | // Filter out precision (number of digits to display) |
knaresh89 | 0:33cb2fa095df | 380 | // |
knaresh89 | 0:33cb2fa095df | 381 | NumDigits = 0u; |
knaresh89 | 0:33cb2fa095df | 382 | c = *sFormat; |
knaresh89 | 0:33cb2fa095df | 383 | if (c == '.') { |
knaresh89 | 0:33cb2fa095df | 384 | sFormat++; |
knaresh89 | 0:33cb2fa095df | 385 | do { |
knaresh89 | 0:33cb2fa095df | 386 | c = *sFormat; |
knaresh89 | 0:33cb2fa095df | 387 | if ((c < '0') || (c > '9')) { |
knaresh89 | 0:33cb2fa095df | 388 | break; |
knaresh89 | 0:33cb2fa095df | 389 | } |
knaresh89 | 0:33cb2fa095df | 390 | sFormat++; |
knaresh89 | 0:33cb2fa095df | 391 | NumDigits = NumDigits * 10u + ((unsigned)c - '0'); |
knaresh89 | 0:33cb2fa095df | 392 | } while (1); |
knaresh89 | 0:33cb2fa095df | 393 | } |
knaresh89 | 0:33cb2fa095df | 394 | // |
knaresh89 | 0:33cb2fa095df | 395 | // Filter out length modifier |
knaresh89 | 0:33cb2fa095df | 396 | // |
knaresh89 | 0:33cb2fa095df | 397 | c = *sFormat; |
knaresh89 | 0:33cb2fa095df | 398 | do { |
knaresh89 | 0:33cb2fa095df | 399 | if ((c == 'l') || (c == 'h')) { |
knaresh89 | 0:33cb2fa095df | 400 | sFormat++; |
knaresh89 | 0:33cb2fa095df | 401 | c = *sFormat; |
knaresh89 | 0:33cb2fa095df | 402 | } else { |
knaresh89 | 0:33cb2fa095df | 403 | break; |
knaresh89 | 0:33cb2fa095df | 404 | } |
knaresh89 | 0:33cb2fa095df | 405 | } while (1); |
knaresh89 | 0:33cb2fa095df | 406 | // |
knaresh89 | 0:33cb2fa095df | 407 | // Handle specifiers |
knaresh89 | 0:33cb2fa095df | 408 | // |
knaresh89 | 0:33cb2fa095df | 409 | switch (c) { |
knaresh89 | 0:33cb2fa095df | 410 | case 'c': { |
knaresh89 | 0:33cb2fa095df | 411 | char c0; |
knaresh89 | 0:33cb2fa095df | 412 | v = va_arg(*pParamList, int); |
knaresh89 | 0:33cb2fa095df | 413 | c0 = (char)v; |
knaresh89 | 0:33cb2fa095df | 414 | _StoreChar(&BufferDesc, c0); |
knaresh89 | 0:33cb2fa095df | 415 | break; |
knaresh89 | 0:33cb2fa095df | 416 | } |
knaresh89 | 0:33cb2fa095df | 417 | case 'd': |
knaresh89 | 0:33cb2fa095df | 418 | v = va_arg(*pParamList, int); |
knaresh89 | 0:33cb2fa095df | 419 | _PrintInt(&BufferDesc, v, 10u, NumDigits, FieldWidth, FormatFlags); |
knaresh89 | 0:33cb2fa095df | 420 | break; |
knaresh89 | 0:33cb2fa095df | 421 | case 'u': |
knaresh89 | 0:33cb2fa095df | 422 | v = va_arg(*pParamList, int); |
knaresh89 | 0:33cb2fa095df | 423 | _PrintUnsigned(&BufferDesc, (unsigned)v, 10u, NumDigits, FieldWidth, FormatFlags); |
knaresh89 | 0:33cb2fa095df | 424 | break; |
knaresh89 | 0:33cb2fa095df | 425 | case 'x': |
knaresh89 | 0:33cb2fa095df | 426 | case 'X': |
knaresh89 | 0:33cb2fa095df | 427 | v = va_arg(*pParamList, int); |
knaresh89 | 0:33cb2fa095df | 428 | _PrintUnsigned(&BufferDesc, (unsigned)v, 16u, NumDigits, FieldWidth, FormatFlags); |
knaresh89 | 0:33cb2fa095df | 429 | break; |
knaresh89 | 0:33cb2fa095df | 430 | case 's': |
knaresh89 | 0:33cb2fa095df | 431 | { |
knaresh89 | 0:33cb2fa095df | 432 | const char * s = va_arg(*pParamList, const char *); |
knaresh89 | 0:33cb2fa095df | 433 | do { |
knaresh89 | 0:33cb2fa095df | 434 | c = *s; |
knaresh89 | 0:33cb2fa095df | 435 | s++; |
knaresh89 | 0:33cb2fa095df | 436 | if (c == '\0') { |
knaresh89 | 0:33cb2fa095df | 437 | break; |
knaresh89 | 0:33cb2fa095df | 438 | } |
knaresh89 | 0:33cb2fa095df | 439 | _StoreChar(&BufferDesc, c); |
knaresh89 | 0:33cb2fa095df | 440 | } while (BufferDesc.ReturnValue >= 0); |
knaresh89 | 0:33cb2fa095df | 441 | } |
knaresh89 | 0:33cb2fa095df | 442 | break; |
knaresh89 | 0:33cb2fa095df | 443 | case 'p': |
knaresh89 | 0:33cb2fa095df | 444 | v = va_arg(*pParamList, int); |
knaresh89 | 0:33cb2fa095df | 445 | _PrintUnsigned(&BufferDesc, (unsigned)v, 16u, 8u, 8u, 0u); |
knaresh89 | 0:33cb2fa095df | 446 | break; |
knaresh89 | 0:33cb2fa095df | 447 | case '%': |
knaresh89 | 0:33cb2fa095df | 448 | _StoreChar(&BufferDesc, '%'); |
knaresh89 | 0:33cb2fa095df | 449 | break; |
knaresh89 | 0:33cb2fa095df | 450 | default: |
knaresh89 | 0:33cb2fa095df | 451 | break; |
knaresh89 | 0:33cb2fa095df | 452 | } |
knaresh89 | 0:33cb2fa095df | 453 | sFormat++; |
knaresh89 | 0:33cb2fa095df | 454 | } else { |
knaresh89 | 0:33cb2fa095df | 455 | _StoreChar(&BufferDesc, c); |
knaresh89 | 0:33cb2fa095df | 456 | } |
knaresh89 | 0:33cb2fa095df | 457 | } while (BufferDesc.ReturnValue >= 0); |
knaresh89 | 0:33cb2fa095df | 458 | |
knaresh89 | 0:33cb2fa095df | 459 | if (BufferDesc.ReturnValue > 0) { |
knaresh89 | 0:33cb2fa095df | 460 | // |
knaresh89 | 0:33cb2fa095df | 461 | // Write remaining data, if any |
knaresh89 | 0:33cb2fa095df | 462 | // |
knaresh89 | 0:33cb2fa095df | 463 | if (BufferDesc.Cnt != 0u) { |
knaresh89 | 0:33cb2fa095df | 464 | SEGGER_RTT_Write(BufferIndex, acBuffer, BufferDesc.Cnt); |
knaresh89 | 0:33cb2fa095df | 465 | } |
knaresh89 | 0:33cb2fa095df | 466 | BufferDesc.ReturnValue += (int)BufferDesc.Cnt; |
knaresh89 | 0:33cb2fa095df | 467 | } |
knaresh89 | 0:33cb2fa095df | 468 | return BufferDesc.ReturnValue; |
knaresh89 | 0:33cb2fa095df | 469 | } |
knaresh89 | 0:33cb2fa095df | 470 | |
knaresh89 | 0:33cb2fa095df | 471 | /********************************************************************* |
knaresh89 | 0:33cb2fa095df | 472 | * |
knaresh89 | 0:33cb2fa095df | 473 | * SEGGER_RTT_printf |
knaresh89 | 0:33cb2fa095df | 474 | * |
knaresh89 | 0:33cb2fa095df | 475 | * Function description |
knaresh89 | 0:33cb2fa095df | 476 | * Stores a formatted string in SEGGER RTT control block. |
knaresh89 | 0:33cb2fa095df | 477 | * This data is read by the host. |
knaresh89 | 0:33cb2fa095df | 478 | * |
knaresh89 | 0:33cb2fa095df | 479 | * Parameters |
knaresh89 | 0:33cb2fa095df | 480 | * BufferIndex Index of "Up"-buffer to be used. (e.g. 0 for "Terminal") |
knaresh89 | 0:33cb2fa095df | 481 | * sFormat Pointer to format string, followed by the arguments for conversion |
knaresh89 | 0:33cb2fa095df | 482 | * |
knaresh89 | 0:33cb2fa095df | 483 | * Return values |
knaresh89 | 0:33cb2fa095df | 484 | * >= 0: Number of bytes which have been stored in the "Up"-buffer. |
knaresh89 | 0:33cb2fa095df | 485 | * < 0: Error |
knaresh89 | 0:33cb2fa095df | 486 | * |
knaresh89 | 0:33cb2fa095df | 487 | * Notes |
knaresh89 | 0:33cb2fa095df | 488 | * (1) Conversion specifications have following syntax: |
knaresh89 | 0:33cb2fa095df | 489 | * %[flags][FieldWidth][.Precision]ConversionSpecifier |
knaresh89 | 0:33cb2fa095df | 490 | * (2) Supported flags: |
knaresh89 | 0:33cb2fa095df | 491 | * -: Left justify within the field width |
knaresh89 | 0:33cb2fa095df | 492 | * +: Always print sign extension for signed conversions |
knaresh89 | 0:33cb2fa095df | 493 | * 0: Pad with 0 instead of spaces. Ignored when using '-'-flag or precision |
knaresh89 | 0:33cb2fa095df | 494 | * Supported conversion specifiers: |
knaresh89 | 0:33cb2fa095df | 495 | * c: Print the argument as one char |
knaresh89 | 0:33cb2fa095df | 496 | * d: Print the argument as a signed integer |
knaresh89 | 0:33cb2fa095df | 497 | * u: Print the argument as an unsigned integer |
knaresh89 | 0:33cb2fa095df | 498 | * x: Print the argument as an hexadecimal integer |
knaresh89 | 0:33cb2fa095df | 499 | * s: Print the string pointed to by the argument |
knaresh89 | 0:33cb2fa095df | 500 | * p: Print the argument as an 8-digit hexadecimal integer. (Argument shall be a pointer to void.) |
knaresh89 | 0:33cb2fa095df | 501 | */ |
knaresh89 | 0:33cb2fa095df | 502 | int SEGGER_RTT_printf(unsigned BufferIndex, const char * sFormat, ...) { |
knaresh89 | 0:33cb2fa095df | 503 | int r; |
knaresh89 | 0:33cb2fa095df | 504 | va_list ParamList; |
knaresh89 | 0:33cb2fa095df | 505 | |
knaresh89 | 0:33cb2fa095df | 506 | va_start(ParamList, sFormat); |
knaresh89 | 0:33cb2fa095df | 507 | r = SEGGER_RTT_vprintf(BufferIndex, sFormat, &ParamList); |
knaresh89 | 0:33cb2fa095df | 508 | va_end(ParamList); |
knaresh89 | 0:33cb2fa095df | 509 | return r; |
knaresh89 | 0:33cb2fa095df | 510 | } |
knaresh89 | 0:33cb2fa095df | 511 | /*************************** End of file ****************************/ |